Our 2 nieces often spend the weekend with us . At our house. They also come on holiday with us . The oldest one is 18 , the youngest is 12 . My wife and our 18 year old niece. Were spending the day in the city . Shopping and going for a meal . This is in England . I had taken my wife and our niece , 2 miles to use the Tram . To go in to the city Centre . When thy were on the Tram , coming back . They would phone me , arranging for me to collect them from the Tram . Over the years , both nieces would sit on my knee . Or my lap . With nothing happening. This day , when i returned from taking thm to the tram . I sat watching tv , with my 12 year old niece . We were sitting on the sofa . She moved over to sit on my lap . After sitting there for about 10 minutes . She said , slap me down there. Meaning her pussy . I sat there doing nothing . Then she opened her legs . Again asking me to slap her . When i did nothing . She got hold of my hand . She moved my hand between her legs , to her pussy . She had taken her panties off , when i was out . This gave me an erection . She took my fingers, rubbing her pussy with them . Saying rub me . I was shocked , not knowing what to do . She stood up , facing me . She lifted her dress , showing me her pussy . Asking me to finger her . This made me want her . I fingered her . I lifted her dress off , over her head . Leaving her naked . Small developing boobs . A nice bald pussy . My erection was making a big bulge in my pants . She pointed at the bulge and said , show me . I dopped my pants , and let her touch me . Then i took my shirt off , standing naked . I led her to the bedroom . Getting her to lay on the bed . I fingered her pussy . She asked me to lick her . I got down between her thighs . To lick her pussy . Making her cum . I tried to fuck her . Her pussy was nice and wet . My cock slid in easily . I had expected her to be a virgin . Fucking her . I asked her if it was her first time . She lived next to a farm . Her and another girl . Had let 2 boys have sex with them . In a barn . I was cumming in her pussy . Now when my wife and her sister went to our city shopping . I would take them to the tram . When i got back home . She would be laying on the bed naked . We had sex for a few weeks . Then she had a period . I bought some condoms , to be safe . For the next 2 years . I got to fuck her . Her sister had stopped coming to stay . When she got a boyfriend . She would still meet up with my wife to go shopping . Then the younger niece got a boyfriend. Who fucked her . So she stopped coming to stay . By that time she had a fully developed body . Nice boob and hairy pussy . She asked me to buy condoms for her . I would drive out to meet her for a coffee. To give her the condoms .